“It’s a small trade, but if it’s successful, it will be our most profitable,” Ackman remarked. In an investor letter last month, Ackman hinted on an “attractive standalone investment and one that offers significant hedging benefits for [their]portfolio. For a modest amount of capital commitment, this investment offers the potential for extraordinary profits.”

However, the Hong Kong Monetary Authority “has no plan or intention to change the system as it continues to serve Hong Kong well.”

iShares MSCI Hong Kong

For more information on Hong Kong, visit our Hong Kong category.

Max Chen contributed to this article.